英语时态填空
1.What were you doing when he came to see you yesterday?
I_______(put)on my overcoat and_________(leave)to visit a friendd of mine.
2.It is reported that more than twenty people_______(kill)in the earthquake.
3.The invention of the computer _____________(affect)the advance of science greatly.
要能给出理由 分析
第一空写had put 再用过去分词left表将要有何不可？